/*
 * Copyright 2004 original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jbfilter.jsp.fcomps;

import javax.servlet.jsp.JspException;

import org.apache.commons.lang.StringUtils;
import org.jbfilter.core.FilterComponent;
import org.jbfilter.core.JbfilterComparatorKeyword;
import org.jbfilter.core.fcomps.single.ComparableFilterComponent;
import org.jbfilter.jsp.EnumUtils;
import org.jbfilter.jsp.JbfilterTag;
import org.jbfilter.jsp.JbfilterTagAttribute;

public class ComparableFilterComponentTag<E, T extends Comparable<? super T>>
	extends
		ConverterSingleFilterComponentTag<E, T> {

	private JbfilterComparatorKeyword comparatorKeyword;
	private JbfilterComparatorKeyword comparatorKeywordCleanValue;
	private boolean comparatorKeywordCleanValueSet = false;
	
	@Override
	protected FilterComponent<E> createComponent() throws JspException {
		return getFilterComponentProvider().<E, T>newComparableFilterComponent();
	}

	@Override
	protected void setPropertiesConverterSingleFilterComponentTagCallback()
			throws JspException {
		ComparableFilterComponent<E, T> comp = getComparableFilterComponent();
		if (comparatorKeyword != null) {
			comp.setComparatorKeyword(comparatorKeyword);
		}
		if (comparatorKeywordCleanValueSet) {
			comp.setComparatorKeywordCleanValue(comparatorKeywordCleanValue);
		}
	}
	@SuppressWarnings("unchecked")
	private ComparableFilterComponent<E, T> getComparableFilterComponent() {
		return (ComparableFilterComponent<E, T>)getFilterComponent();
	}

	public void setComparatorKeyword(String comparatorKeywordAsString) throws JspException {
		// do nothing for blank strings
		if (StringUtils.isBlank(comparatorKeywordAsString)) {
			return;
		}
		this.comparatorKeyword = EnumUtils.fromString(
											comparatorKeywordAsString,
											JbfilterComparatorKeyword.class,
											JbfilterTagAttribute.comparatorKeyword,
											JbfilterTag.comparableComponent);
	}

	public void setComparatorKeywordCleanValue(String comparatorKeyword) {
		if (StringUtils.isBlank(comparatorKeyword)) {
			this.comparatorKeywordCleanValue = null;
		} else {
			this.comparatorKeywordCleanValue = JbfilterComparatorKeyword.valueOf(comparatorKeyword);
		}
		comparatorKeywordCleanValueSet = true;
	}
	@Override
	protected JbfilterTag getJbfilterTag() {
		return JbfilterTag.comparableComponent;
	}

}
